Customer has come back to me today to report that sending a test order through cleared the message and the error hasn’t reoccurred. 🙂

Hey Olly
Thanks so much. Customer reports that it’s all fixed. 🙂
However they’re also reporting that since the update they’re getting lots of order confirmation emails for customers being bounced back to them. Can you confirm that’s just coincidence and nothing to do with the update?
Thx
Alison